Publications

Displaying 151 - 175 of 358

Comparison of Cryogenic Radiometry and Thermal Radiometry Calibrations at NIST Using Multichannel Filter Raidometers

February 7, 2003

Author(s)

Bettye C. Johnson, Steven W. Brown, Keith R. Lykke, Charles E. Gibson, G Fargion, G Meister, S B. Hooker, B L. Markham, James J. Butler

Comparison of independent measurement results allows an assessment of the accuracy of the underlying methods. In this work, four multichannel filter radiometers were calibrated using tunable laser-illuminated and lamp-illuminated integrating sphere sources

Simbad A Calibration Using a Laser Based Facility and Comparison With Previous Techniques

February 1, 2003

Author(s)

N Souaidia, Steven W. Brown, Bettye C. Johnson

Two multi-channel filter radiometers were calibrated using three different techniques: against a lamp-illuminated integrating sphere source, against a laser-illuminated integrating sphere source and by cross-calibration against a primary sun photometer

Stray-Light Correction Algorithm for Spectrographs

February 1, 2003

Author(s)

Steven W. Brown, Bettye C. Johnson, M Feinholz, M Yarbrough, S Flora, Keith R. Lykke, D K. Clark

In this work, we describe an algorithm to correct a spectrograph's response for stray light. Two recursion relations are developed: one to correct the system response when measuring broad-band calibration sources and a second to correct the response when

A Comparison of Laser-Based and Conventional Calibrations of Sun Photometers, ed. by G.S. Fargion and C.R. McClain

January 1, 2003

Author(s)

N Souaidia, C Pietras, Steven W. Brown, Bettye C. Johnson, G Fargion

A Portable Integrating Sphere Source for the Earth Observing System's Calibration Validation Program

January 1, 2003

Author(s)

Steven W. Brown, Bettye C. Johnson

Characterization and Calibration of a Trap Detector Filter Radiometer

January 1, 2003

Author(s)

David W. Allen, George P. Eppeldauer, Steven W. Brown, E A. Early, Bettye C. Johnson, Keith R. Lykke

Development of a Portable Integrating Sphere Source for the Earth Observing System's Calibration Validation Program

January 1, 2003

Author(s)

Steven W. Brown, Bettye C. Johnson

Development of a Portable Integrating Sphere Source for the Earth Observing System's Calibration Validation Programme

January 1, 2003

Author(s)

Steven W. Brown, Bettye C. Johnson

We have designed and built a portable integrating sphere source to be used at NASA satellite sensor calibration facilities in support of the EOS calibration validation program. The source is designed to complement existing detector-based radiance

MOBY, a Radiometric Buoy for Performance Monitoring and Vcarious Calibration of Satellite Ocean Color Sensors: Measurement and Data Analysis Protocols, ed. by J.L. Mueller, G.S. Fargion, and C.R. McClain

January 1, 2003

Author(s)

D K. Clark, M A. Yarbrough, M E. Feinholz, S Flora, W Broenkow, Y S. Kim, B. Carol Johnson, Steven W. Brown, M Yuen, J L. Mueller

New Technologies for Radiometry: Impact on Ocean Color Research

January 1, 2003

Author(s)

Bettye C. Johnson, Steven W. Brown, N Souaidia, M E. Feinholz, M Yarbrough, S Flora, D K. Clark

Preliminary Results of Aperture Area Comparison for Exo-Atmospheric Solar Irradiance

January 1, 2003

Author(s)

Bettye C. Johnson, Maritoni A. Litorja, James J. Butler

Radiometric Measurement Comparison on the Integrating Sphere Source used to Calibrate the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Landsat 7 Enhanced Thematic Mapper Plus (ETM+)

January 1, 2003

Author(s)

James J. Butler, Steven W. Brown, Robert D. Saunders, B. Carol Johnson, S F. Biggar, E F. Zalewski, B L. Markham, P N. Gracey, J B. Young, R A. Barnes

Recent Advances in Radiometry for Ocean Color Remote Sensing

January 1, 2003

Author(s)

Steven W. Brown, Bettye C. Johnson

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